I think we waited to tell everyone until after 12 weeks each time, except my first when I had to tell work at around 8 weeks due to the chemicals I was working with. I think we might have told our parents around then too. I didn't tell my local friends until around 15 weeks with DD1 because I didn't know them that well back then and it didn't come up in conversation. I held off until around 15 weeks with DD2 because my best friend was TTC for over a year and I really wanted her to be pregnant when I told her (guilt over an oopsie baby when she desperately wanted one). I would have hidden it longer but it was getting a bit obvious by then.